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// Station · 57m ago

KTTD

Portland Troutdale Airport
CAT VFR
WIND CALM
VIS 10+ SM
CEILING CLR
T/Td 12.2°C / 9.4°C
ALTIM 29.92 inHg
ELEV 39 FT
45.5494°N / 122.4010°W
LOCATION · Portland, US
N
WIND
000°0 kt
KTTD · 39 FT
© OSM · CartoDB

// Current + 24h forecast · METAR loaded · TAF loading…

METRIC
NOW · 08Z
+6H
+12H
+18H
WIND
CALM
 
 
 
VIS
10+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
 
 
 
T / Td
12 / 9
 
 
 
ALTIM
29.92"
 
 
 

// Interpretation

VFR with winds calm. Visibility better than 10 statute miles and no reported cloud layers. Would shift to MVFR if the ceiling drops to 3,000 ft or visibility below 5 SM.

Loading TAF forecast narrative…

SOURCES · NOAA Aviation Weather Center METAR (TAF loading…)

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// Raw observation METAR string + decoded

METAR KTTD 270853Z AUTO 00000KT 10SM CLR 12/09 A2992 RMK AO2 SLP131 T01220094 51005

KTTD · day 27 at 08:53 UTC · winds calm · visibility 10+ SM · temp 12°C / dewpoint 9°C · altimeter 29.92" Hg · automated station w/ precipitation discriminator · sea-level pressure 1013.1 mb

// Runway analysis · computed from current METAR wind

Wind CALM
ALL USABLE · WINDS CALM
N
WIND
000°calm
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 2 ends
07 HDG 070° CALM 5,399'
25 HDG 250° CALM 5,399'
Pattern altitude: 1,039 ft MSL (1,000 ft AGL). Verify pattern direction and altitude with the chart supplement before flying. // On calm winds (<3 kt), all runways are usable — favor the longest or whatever the pattern calls for.

// Density altitude · ISA -3°C

-300FT
-339 FT BELOW FIELD ELEV
// DA · LAST 24 HOURS ↗ +100 FT
800 50 -700
24h AGO18h12h6hNOW
FIELD ELEV39 FT OAT+12°C ISA DELTA-3°C PRESSURE ALT36 FT
// Performance equivalent Operating here right now feels like operating at KAST (Astoria Regional Airport, Astoria, elev 15 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+0%
-0%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+0%
-0%
Light jetCJ4, Phenom 300, M2
+0%
-0%

Approximate using ~10% perf loss / 1,000 ft DA for normally aspirated, scaled by powerplant type. Verify with your aircraft's POH for accurate numbers — especially above 5,000 ft DA where these rules of thumb diverge.

// Cloud layers · clear · no layers reported

FT 0 5k 10k 15k 20k 25k FRZ LVL · 6,201 FT KTTD ELEV · 39 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING HIGHEST LAYER TOTAL COVERAGEclear FREEZING LEVEL6,201 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC-8)

12:28ZSUNRISE
20:08ZSOLAR NOON
03:47ZSUNSET
04:23ZCIVIL END
CURRENT09:50Z DAYLIGHT REMAINING17h 57m VFR NIGHT BEGINS04:23Z (18h 33m) DAY LENGTH15h 18m
Waxing Gibbous
ILLUMINATION82% MOONRISE21:09Z MOONSET12:28Z FULL MOON IN4 days

// Nearest reporting stations · 5 shown · 60 NM radius

// Area map · 60 NM radius · CartoDB Dark Matter + aeronautical overlay

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